+/**
+ * @file
+ * @brief Interface for interference graphs.
+ * @author Sebastian Hack
+ * @date 18.11.2005
+ * @version $Id$
+ */
+#ifndef FIRM_BE_BEIFG_H
+#define FIRM_BE_BEIFG_H
+
+#include <stdio.h>
+
+#include "irnode.h"
+
+#include "becopyopt.h"
+#include "beirg.h"
+
+typedef struct _be_ifg_impl_t be_ifg_impl_t;
+typedef struct _be_ifg_t be_ifg_t;
+
+#define be_ifg_nodes_iter_alloca(self) (alloca(be_ifg_nodes_iter_size(self)))
+#define be_ifg_neighbours_iter_alloca(self) (alloca(be_ifg_neighbours_iter_size(self)))
+#define be_ifg_cliques_iter_alloca(self) (alloca(be_ifg_cliques_iter_size(self)))
+
+size_t (be_ifg_nodes_iter_size)(const be_ifg_t *self);
+size_t (be_ifg_neighbours_iter_size)(const be_ifg_t *self);
+size_t (be_ifg_cliques_iter_size)(const be_ifg_t *self);
+void (be_ifg_free)(be_ifg_t *self);
+int (be_ifg_connected)(const be_ifg_t *self, const ir_node *a, const ir_node *b);
+ir_node *(be_ifg_neighbours_begin)(const be_ifg_t *self, void *iter, const ir_node *irn);
+ir_node *(be_ifg_neighbours_next)(const be_ifg_t *self, void *iter);
+void (be_ifg_neighbours_break)(const be_ifg_t *self, void *iter);
+ir_node *(be_ifg_nodes_begin)(const be_ifg_t *self, void *iter);
+ir_node *(be_ifg_nodes_next)(const be_ifg_t *self, void *iter);
+void (be_ifg_nodes_break)(const be_ifg_t *self, void *iter);
+int (be_ifg_cliques_begin)(const be_ifg_t *self, void *iter, ir_node **buf);
+int (be_ifg_cliques_next)(const be_ifg_t *self, void *iter);
+void (be_ifg_cliques_break)(const be_ifg_t *self, void *iter);
+int (be_ifg_degree)(const be_ifg_t *self, const ir_node *irn);
+
+#define be_ifg_foreach_neighbour(self, iter, irn, pos) \
+ for(pos = be_ifg_neighbours_begin(self, iter, irn); (pos); pos = be_ifg_neighbours_next(self, iter))
+
+#define be_ifg_foreach_node(self, iter, pos) \
+ for(pos = be_ifg_nodes_begin(self, iter); (pos); pos = be_ifg_nodes_next(self, iter))
+
+#define be_ifg_foreach_clique(self, iter, buf, count) \
+ for(*(count) = be_ifg_cliques_begin(self, iter, buf); \
+ *(count) != -1 ; \
+ *(count) = be_ifg_cliques_next(self, iter))